I've enjoyed dinner here twice on my trips to Montreal and had a great time both times. Les Deux Gamins is located in a cute area and set up like restaurants I've been to in France (ie. the small tables, two floors). This definitely adds to the whole authenticity and atmosphere of eating French food.
The service was great and the staff provided recommendations on food selection.
I recall both the duck confit and the salmon tartare to be delicious! Pricing is reasonable.